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Return-to-duty process
  • Return-to-duty tests are for drivers who failed a test or violated the rules.
  • The test is applicable after the driver completes SAP evaluations and education or treatment requirements specified by the SAP.
  • Return-to-duty drug tests must be performed under direct observation.

Return-to-duty testing is done according to the procedures in Part 40 after an employee has failed a test or otherwise violated the rules, completed the education and/or treatment requirements specified by a substance abuse professional, and is ready to return to duty. Return-to-duty drug tests must be conducted under direct observation.

Return-to-duty testing is not used for drivers who have been absent from work for a period of time and want to return to duty (work); in such cases, a pre-employment test should be administered.